Question

Select the option which is equivalent to the following expression:
$\frac{0.00024+120\times {10}^{-6}}{0.0000000013}$

• A. $30\times {10}^6$
• B. $3\times {10}^5$
• C. $3\times {10}^6$
• D. $3\times {10}^5$

Answer 1

The correct option is D $3\times {10}^5$

Given:

$\frac{0.00024+120\times {10}^{-6}}{0.0000000013}$

Convert it into standard form,

$\frac{0.00024+0.00012}{0.0000000013}$

$=\frac{0.00036}{0.0000000013}$

$=\frac{36}{100000}\times \frac{100000000000}{13}$

$=3\times {10}^5$